<template>
  <div>
    <!-- 面包屑导航栏 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片内容 -->
    <el-card class="box-card">
      <!-- 搜索框和添加用户区域 -->
      <el-row :gutter="20">
        <el-col :span="10">
          <el-input
            placeholder="请输入内容"
            class="input-with-select"
            v-model="queryInfo.query"
            clearable
            @clear="getUserList()"
          >
            <el-button slot="append" icon="el-icon-search" @click="getUserList()"></el-button>
          </el-input>
        </el-col>
        <el-col :span="6">
          <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>
      <!-- 用户表格区域 -->
      <el-table :data="userList" stripe border>
        <el-table-column type="index"></el-table-column>
        <el-table-column prop="username" label="姓名"></el-table-column>
        <el-table-column prop="email" label="邮箱"></el-table-column>
        <el-table-column prop="mobile" label="电话"></el-table-column>
        <el-table-column prop="role_name" label="角色"></el-table-column>
        <el-table-column prop="mg_state" label="状态">
          <!-- 利用作用域插槽关联数据 -->
          <template slot-scope="scope">
            <el-switch v-model="scope.row.mg_state" @change="userStateChange(scope.row)"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180">
          <template slot-scope="scope">
            <!-- 编辑按钮 -->
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="showEditDialog(scope.row.id)"
            ></el-button>
            <!-- 删除按钮 -->
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="removeUserById(scope.row.id)"
            ></el-button>
            <!-- 分配角色按钮 -->
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button
                type="warning"
                icon="el-icon-setting"
                size="mini"
                @click="setRole(scope.row)"
              ></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 3, 5]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      ></el-pagination>
    </el-card>

    <!-- 添加用户的对话面板区域 -->
    <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClose()">
      <!-- 主体内容区域 -->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 脚部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改用户的对话框区域 -->
    <el-dialog
      title="修改用户"
      :visible.sync="editDialogVisible"
      width="50%"
      @close="editDialogClose()"
    >
      <!-- 主体内容区域 -->
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 脚部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo()">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配角色的对话框区域 -->
    <el-dialog
      title="分配角色"
      :visible.sync="setRoleDialogVisible"
      width="50%"
      @close="setRoleDialogClose()"
    >
      <div>
        <p>当前的用户：{{userInfo.username}}</p>
        <p>当前的用户：{{userInfo.role_name}}</p>
        <p>
          选择角色：
          <el-select v-model="selectRoleId" placeholder="请选择">
            <el-option
              v-for="item in roleList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id"
            ></el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo()">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    // 定义校验邮箱的规则
    const checkEmail = (rule, value, cb) => {
      // 校验邮箱的正则表达式
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
      if (regEmail.test(value)) {
        // 合法的邮箱
        return cb()
      }
      cb(new Error('请输入合法的邮箱'))
    }
    // 定义校验手机的规则
    const checkMobile = (rule, value, cb) => {
      const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
      if (regMobile.test(value)) {
        return cb()
      }
      cb(new Error('请输入合法的手机'))
    }
    return {
      // 用户列表数据
      userList: [],
      // 请求参数
      queryInfo: { query: '', pagenum: 1, pagesize: 2 },
      total: 0,
      // 控制添加用户对话面板的显示,默认隐藏
      addDialogVisible: false,
      // 添加用户的表单数据
      addForm: { username: '', password: '', email: '', mobile: '' },
      // 添加用户的表单验证规则
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 控制修改用户对话面板的显示，默认隐藏
      editDialogVisible: false,
      // 根据Id查询到的用户数据
      editForm: {},
      // 修改用户的表单的验证规则
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 控制分配角色对话框的显示
      setRoleDialogVisible: false,
      // 即将分配角色的用户信息
      userInfo: {},
      // 所有的角色列表
      roleList: [],
      // 已选中的角色id
      selectRoleId: ''
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    async getUserList() {
      const { data: res } = await this.$http.get('/v1/users', {
        params: this.queryInfo
      })
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
      this.userList = res.data.users
      this.total = res.data.total
      // console.log(res)
    },
    // 监听每页显示条数的改变
    handleSizeChange(newSize) {
      // console.log('当前' + newSize)
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听当前页面的改变
    handleCurrentChange(newPage) {
      // console.log(newPage)
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    // 监听switch开关 用户状态改变
    async userStateChange(userInfo) {
      const { data: res } = await this.$http.put(
        `/v1/users/${userInfo.id}/state/${userInfo.mg_state}`
      )
      if (res.meta.status !== 200) {
        userInfo.mg_state = !userInfo.mg_state
        return this.$message.error('更新用户状态失败！')
      }
      this.$message.success('更新用户状态成功！')
    },
    // 添加用户对话框关闭的监听事件
    addDialogClose() {
      this.$refs.addFormRef.resetFields()
    },
    // 点击确定按钮，添加用户
    addUser() {
      this.$refs.addFormRef.validate(async value => {
        // value=true-->预校验通过，，，value=false-->预校验未通过
        if (!value) return
        // 可以发起网络请求添加用户了
        const { data: res } = await this.$http.post('users', this.addForm)
        if (res.meta.status !== 201) {
          return this.$message.error('添加用户失败！')
        }
        this.$message.success('添加用户成功！')
        // 关闭添加用户对话框
        this.addDialogVisible = false
        // 刷新用户列表数据
        this.getUserList()
      })
    },
    // 点击编辑按钮，修改用户
    async showEditDialog(id) {
      const { data: res } = await this.$http.get('/v1/users/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('修改失败')
      }
      this.editForm = res.data
      this.editDialogVisible = true
    },
    // 监听编辑用户的关闭事件
    editDialogClose() {
      // 重置验证结果
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户信息预验证并提交
    editUserInfo() {
      this.$refs.editFormRef.validate(async value => {
        if (!value) return
        // 可以发起请求提交表单了
        const { data: res } = await this.$http.put(
          'users/' + this.editForm.id,
          {
            email: this.editForm.email,
            mobile: this.editForm.mobile
          }
        )
        if (res.meta.status !== 200) {
          return this.$message.error('修改用户信息失败！')
        }
        // 关闭对话框
        this.editDialogVisible = false
        // 刷新数据
        this.getUserList()
        // 提示修改成功
        this.$message.success('信息修改成功！')
      })
    },
    // 根据id删除用户
    async removeUserById(id) {
      // 弹框提示是否要删除
      // 点击确定返回字符串confirm
      // 点击取消返回字符串cancel
      const confirmResult = await this.$confirm(
        '此操作将永久删除该用户, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch(err => err)
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除')
      }
      const { data: res } = await this.$http.delete('/v1/users/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('删除失败！')
      }
      this.getUserList()
      this.$message.success('成功删除用户信息！')
    },
    // 点击按钮显示分配角色对话框
    async setRole(role) {
      this.userInfo = role
      this.setRoleDialogVisible = true
      // 获取所有的角色列表
      const { data: res } = await this.$http.get('/v1/roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败！')
      }
      // console.log(res.data)
      this.roleList = res.data
    },
    // 保存信息 确定分配角色
    async saveRoleInfo() {
      if (!this.selectRoleId) {
        return this.$message.error('请先选择要分配的角色')
      }
      const { data: res } = await this.$http.put(
        `/v1/users/${this.userInfo.id}/role`,
        {
          rid: this.selectRoleId
        }
      )
      if (res.meta.status !== 200) {
        return this.$message.error('更新角色失败！')
      }
      this.getUserList()
      this.setRoleDialogVisible = false
      this.$message.success('更新角色成功！')
    },
    // 监听关闭分配角色的对话框事件
    setRoleDialogClose() {
      this.selectRoleId = ''
      this.userInfo = {}
    }
  }
}
</script>

<style lang="less" scoped>
</style>
